The Plankton of the Sea |
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Pagina 119
a parasite composed of four generations of spore cells, each forming a layer
round the preceding generation. Eventually the outside envelope of the parasite
breaks and the spore cells pass out of the gut. They then divide into two
dinospores ...
a parasite composed of four generations of spore cells, each forming a layer
round the preceding generation. Eventually the outside envelope of the parasite
breaks and the spore cells pass out of the gut. They then divide into two
dinospores ...
Pagina 127
In Hemioniscus balanus, the parasite of Balanus balanoides, for instance, the
developed female is a large star-shaped egg-sac representing the abdomen and
last three thoracic segments of the cryptoniscus stage. On its surface, however, ...
In Hemioniscus balanus, the parasite of Balanus balanoides, for instance, the
developed female is a large star-shaped egg-sac representing the abdomen and
last three thoracic segments of the cryptoniscus stage. On its surface, however, ...
Pagina 128
There is no evidence that the epicarid parasites either in their epicarid,
microniscus, or adult stages effect any substantial harm to the populations of their
hosts, although in the adult stages they may occasionally reduce or destroy the
spawning ...
There is no evidence that the epicarid parasites either in their epicarid,
microniscus, or adult stages effect any substantial harm to the populations of their
hosts, although in the adult stages they may occasionally reduce or destroy the
spawning ...
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Indice
PREFACE page | 13 |
THE FIELDS OF THE SEA | 43 |
THE ANIMAL PLANKTON | 66 |
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adult Algae algal amphipod Antapical Antarctic Appendicularia Arctic arrow worm auxospore Biddulphia biol Biological body bottom Calanus Calanus finmarchicus called carbon cells Ceratium Chaetoceros Chaetognatha ciliated Cleve coast coastal copepods Coscinodiscus Crustacea deep water depth diameter diatoms distribution Dorsal eggs Ehbg elegans euphausid Expedition female Figure fish Fisheries flagellated floating G. O. Sars genera genus gonozooid growth Grun hauled Hensen individuals jelly-fish Laboratory larva latitudes latter layer light living lower marine medusa mentioned mouth Mysidae neritic North Atlantic North Sea Norwegian Sea number of species nutrients occur oceanic organic matter oxygen parasite pelagic peridinians Peridinium photophores photosynthesis phyto phytoplankton plankton plankton organisms plants Plate polyp population produced Rhizosolenia round Sagitta samples Sars sea water seasonal segments shell shrimps spores stage standing crop stations Steemann Nielsen surface water swimming temperature thoracic Thysanoessa tion tropical tube Ventral vertical warmer zone zooplankton